/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.kie.kogito.addon.quarkus.messaging.common;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import javax.enterprise.context.ApplicationScoped;

import io.vertx.core.impl.ConcurrentHashSet;

@ApplicationScoped
public class BackpressureKogitoEmitter implements QuarkusEmitterController {

    private Set<String> statuses = new ConcurrentHashSet<>();
    private Map<String, Runnable> handlers = new HashMap<>();

    @Override
    public boolean resume(String channelName) {
        boolean result = statuses.remove(channelName);
        if (result) {
            Runnable handler = handlers.get(channelName);
            if (handler != null) {
                handler.run();
            }
        }
        return result;
    }

    @Override
    public boolean stop(String channelName) {
        return statuses.add(channelName);
    }

    @Override
    public boolean isEnabled(String channelName) {
        return !statuses.contains(channelName);
    }

    public void registerHandler(String channelName, Runnable runnable) {
        handlers.put(channelName, runnable);
    }
}
